CN103851374A - Light-emitting diode group and lens thereof - Google Patents
Light-emitting diode group and lens thereof Download PDFInfo
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- CN103851374A CN103851374A CN201210513965.1A CN201210513965A CN103851374A CN 103851374 A CN103851374 A CN 103851374A CN 201210513965 A CN201210513965 A CN 201210513965A CN 103851374 A CN103851374 A CN 103851374A
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- light
- emitting diode
- lens
- light emitting
- ring bodies
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Abstract
The invention provides a light-emitting diode group. The light-emitting diode group comprises a light-emitting diode and a lens, wherein the lens comprises a body and a plurality of annular bodies which are formed on the body; the body comprises a bottom face adjacent to the light-emitting diode and a top face far away from the light-emitting diode; an in-light surface for emitting the light of the light-emitting diode is formed on the bottom face of the body; the annular bodies are arrayed on the top face of the body circle by circle from inside to outside; each connection part comprises a light diffusion face and a connection face; light is emitted into the lens and then is scattered out of the lens by the light diffusion face of each annular body. The light-emitting diode group has smaller thickness on the basis of ensuring the light uniformity. The invention further provides the lens.
Description
Technical field
The present invention relates to a kind of light emitting diode combined and lens thereof, refer to especially a kind of light emitting diode combined for down straight aphototropism mode set and lens thereof.
Background technology
Light emitting diode, as emerging light source, has been widely used in the middle of various uses, particularly display backlight module.The comparatively general one of existing application is down straight aphototropism mode set, its be by the exiting surface of light emitting diode towards screen, the light direct irradiation screen that light emitting diode is sent.For making to expose to the equalizing light rays of screen, a diffuser plate is set between light emitting diode and screen conventionally.By the scattering process of diffuser plate, the light of light emitting diode can be exported equably.Can carry out scattering to light fully in order to ensure diffuser plate, common way is between light emitting diode and diffuser plate, to stay the distance of enough abundances.But the distance increasing between light emitting diode and diffuser plate can cause the thickness of display to increase, and has influence on the use in space.
Summary of the invention
Therefore, be necessary to provide light emitting diode combined and the lens thereof that a kind of thickness is less.
A kind of light emitting diode combined, comprise light emitting diode and lens, lens comprise body and are formed at the some ring bodies on body, body comprises the bottom surface of close light emitting diode and the end face away from light emitting diode, the bottom surface of body forms the incidence surface for the light incident of light emitting diode, these ring bodies from the inside to the outside from coil to coil are arranged in the end face of body, and every a junction comprises light diffusingsurface and joint face, and light scatters outside lens via the light diffusingsurface of each ring bodies after being incident to lens.
A kind of lens, comprise body and be formed at the some ring bodies on body, body comprises bottom surface and the end face relative with bottom surface, bottom surface forms incidence surface, ring bodies from the inside to the outside from coil to coil is arranged on the end face of body, each ring bodies comprises light diffusingsurface and joint face, and the light that enters lens via incidence surface is scattered outside lens by the light diffusingsurface of each ring bodies.
The multi-turn ring bodies that is similar to Fresnel Lenses due to employing is formed at body surface, and on each loop body, form a light diffusingsurface that can carry out to light scattering, the common mating reaction of light diffusingsurface of these ring bodies, can make lens have stronger light diffusivity.Even if the close together between lens and light source (as light emitting diode), still can realize dispersion effect comparatively uniformly.
With reference to the accompanying drawings, the invention will be further described in conjunction with specific embodiments.
Accompanying drawing explanation
Fig. 1 shows the stereogram of the lens of the light emitting diode combined of one embodiment of the invention.
Fig. 2 is the inversion figure of lens in Fig. 1.
Fig. 3 is the profile of the light emitting diode combined of the lens that comprise Fig. 1.
Main element symbol description
| Light emitting diode combined | 10 |
| |
20 |
| |
22 |
| |
24 |
| |
26 |
| |
30 |
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32 |
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320 |
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322 |
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324 |
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326 |
| Incidence surface | 328 |
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34 |
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340 |
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342 |
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36 |
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40 |
The following specific embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
The specific embodiment
Refer to Fig. 1 and 3, the light emitting diode combined 10 of one embodiment of the invention is shown.This light emitting diode combined 10 comprises that a light emitting diode 20 and covers the lens 30 of light emitting diode 20.
This light emitting diode 20 comprises that a substrate 22, is fixed on luminescence chip 24 and on substrate 22 and covers the packaging body 26 of luminescence chip 24.This substrate 22 is made up of the good material of thermal conductance, is passed to fast in the middle of external environment with the heat that luminescence chip 24 is sent.This luminescence chip 24 can be made up of the semiconductive luminescent materials such as such as gallium nitride, InGaN, aluminum indium nitride gallium.Preferably, luminescence chip 24 of the present invention adopts gallium nitride to make, to send blue light.This packaging body 26 is made up of transparent material, as epoxy resin, silica gel, glass etc.Packaging body 26 is fixed on substrate 22 and coated luminescence chip 24, with by isolated to luminescence chip 24 and external environment, prevents that luminescence chip 24 is subject to the impact of dust in external environment or moisture.This light emitting diode 20 is placed on a base plate 40, to pass through base plate 40 and extraneous power turn-on.
See also Fig. 2, these lens 30 are made into integration by transparent material, as Merlon, polymethyl methacrylate etc.Lens 30 comprise a body 32 and are formed at the multi-turn ring bodies 34 on body 32.This body 32 is rounded, and it comprises end face 322 and that a bottom surface 320, is parallel to bottom surface 320 side 324 between bottom surface 320 and end face 322.Body 32 is offered a cavity 36 of accommodating light emitting diode 20 in the central area of its bottom surface 320.The internal face of this cavity 36 forms the incidence surface 328 of body 32.In the present embodiment, the incidence surface 328 of body 32 is a cancave cambered surface.After the light that light emitting diode 20 sends enters lens 30 via incidence surface 328, end face 322 scatterings by incidence surface 328 towards body.Lens 30 protrude out three feets 38 downwards in the bottom surface 320 of body 32.Feet 38 is for being placed in base plate 40, thereby lens 30 are supported in to light emitting diode 20 tops.
These ring bodies 34 from the inside to the outside from coil to coil are arranged on the end face 322 of body 32.These ring bodies 34 are all circular, and the center of circle is all positioned on the central shaft of body 32.In the present embodiment, the cross section of each ring bodies 34 is triangular in shape, thereby forms at body 32 end faces 322 structure that is similar to Fresnel Lenses.Each ring bodies 34 comprises a joint face 340 and a smooth diffusingsurface 342.This joint face 340 is plane, and its end face 322 perpendicular to body 32 is also parallel to the central shaft of body 32.Certainly, joint face 340 also can with respect to the central shaft of body 32 slightly outwards or slope inwardly, be advisable with the dimming effect of the not obvious light diffusingsurface 342 that has influence on ring bodies 34.The plane of light diffusingsurface 342 for tilting with respect to joint face 340.Angle between light diffusingsurface 342 and joint face 340 is preferably between 40 degree to 60 degree.Certainly, the light diffusingsurface 342 of ring bodies 34 also can be cancave cambered surface, so that stronger light diffusivity to be provided.In addition, convex globoidal is even also applicable to smooth diffusingsurface 342 of the present invention, but need to will have the distance away from enough by scope less its curvature control and from light source.More preferred scheme is, is the plane of inclination near the light diffusingsurface 342 of the ring bodies 34 of outer ring, is cancave cambered surface near 342 of the light diffusingsurfaces of the ring bodies 34 of inner ring.Therefore, lens 30 can keep suitable diffusivity for departing from the light that central shaft intensity is lower, and to providing stronger diffusivity near the higher light of central shaft intensity.The joint face 340 of each ring bodies 34 is parallel mutually, and light diffusingsurface 342 is also parallel to each other, to produce identical light diffusion effect.The joint face 340 of each ring bodies 34 is connected with the light diffusingsurface 342 of adjacent ring bodies 34.Enter the light of lens 30 when from lens 30 outgoing, by the lateral scattering to lens 30 by the light diffusingsurface 342 of each ring bodies 34, thereby make the equalizing light rays of outgoing.
The ring bodies 34 that the central area of body 32 end faces 322 is positioned at innermost circle encloses and forms an exiting surface 326.Due to the light emitting diode 20 light intensity maximum of axle position therein, even the scattering of process body 32 arcs of recesses exiting surfaces 326, its light intensity attenuation effect is also not obvious.For avoiding this part high light directly to penetrate and produce bright hot spot from exiting surface 326, on exiting surface 326, can form a matsurface by the mode such as etching, coining.Thus, light is through after matsurface, will be by scattering randomly, thus effectively reduce the intensity of the light of launching from lens 30 centers.Thus, via the scattering of light diffusingsurface 342 and body 32 exiting surfaces 326 of each ring bodies 34, the light of light emitting diode 20 can be spread equably, thereby uniform illuminating effect can be provided.
The multi-turn ring bodies 34 that is similar to Fresnel Lenses due to employing is formed on lens 30 bodies 32, and make each ring bodies 34 all form a smooth diffusingsurface 342, therefore,, by cooperatively interacting of the smooth diffusingsurface 342 of these ring bodies 34, can make lens 30 possess stronger light diffusivity.Even if light emitting diode 20 is placed on the position nearer apart from lens 30, still can obtain light output comparatively uniformly.Therefore, light emitting diode combined 10 can be applicable in the middle of the occasion higher for thickness requirement, particularly down straight aphototropism mode set.
Claims (10)
1. a light emitting diode combined, comprise light emitting diode and lens, it is characterized in that: lens comprise body and are formed at the some ring bodies on body, body comprises the bottom surface of close light emitting diode and the end face away from light emitting diode, the bottom surface of body forms the incidence surface for the light incident of light emitting diode, these ring bodies from the inside to the outside from coil to coil are arranged in the end face of body, every a junction comprises light diffusingsurface and joint face, and light scatters outside lens via the light diffusingsurface of each ring bodies after being incident to lens.
2. light emitting diode combined as claimed in claim 1, is characterized in that: light diffusingsurface is the plane that relative joint face tilts.
3. light emitting diode combined as claimed in claim 1, is characterized in that: light diffusingsurface is cancave cambered surface.
4. light emitting diode combined as claimed in claim 1, is characterized in that: joint face is perpendicular to the end face of body.
5. light emitting diode combined as claimed in claim 1, is characterized in that: incidence surface is cancave cambered surface.
6. light emitting diode combined as claimed in claim 1, is characterized in that: the light diffusingsurface of ring bodies connects the joint face of adjacent ring bodies.
7. light emitting diode combined as claimed in claim 1, is characterized in that: the end face of body by the ring bodies of innermost circle around region form matsurface.
8. light emitting diode combined as claimed in claim 1, is characterized in that: lens also comprise by the extended some feets of body bottom surface one.
9. lens, it is characterized in that: comprise body and be formed at the some ring bodies on body, body comprises bottom surface and the end face relative with bottom surface, bottom surface forms incidence surface, ring bodies from the inside to the outside from coil to coil is arranged on the end face of body, each ring bodies comprises light diffusingsurface and joint face, and the light that enters lens via incidence surface is scattered outside lens by the light diffusingsurface of each ring bodies.
10. lens as claimed in claim 9, is characterized in that: the ring bodies that body end face is positioned at innermost circle around region form matsurface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210513965.1A CN103851374A (en) | 2012-12-05 | 2012-12-05 | Light-emitting diode group and lens thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210513965.1A CN103851374A (en) | 2012-12-05 | 2012-12-05 | Light-emitting diode group and lens thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103851374A true CN103851374A (en) | 2014-06-11 |
Family
ID=50859354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210513965.1A Pending CN103851374A (en) | 2012-12-05 | 2012-12-05 | Light-emitting diode group and lens thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103851374A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5365418A (en) * | 1990-05-11 | 1994-11-15 | Commonwealth Scientific And Industrial Research Organisation | Traffic light |
| CN1576898A (en) * | 2003-07-29 | 2005-02-09 | 株式会社西铁城电子 | Fresnel lens and an illuminating device provided with the fresnel lens |
| CN101338874A (en) * | 2008-08-07 | 2009-01-07 | 上海亚明灯泡厂有限公司 | Illuminating device and its lens used therein |
| CN101539266A (en) * | 2008-03-19 | 2009-09-23 | 富准精密工业(深圳)有限公司 | Luminous element and lens thereof |
| CN201531823U (en) * | 2009-11-23 | 2010-07-21 | 李乐 | Light diffuser used for high-power LED light source |
| CN101994986A (en) * | 2009-08-21 | 2011-03-30 | 马士科技有限公司 | Fresnel lens sheet and luminaire using the same |
| CN102537832A (en) * | 2010-12-29 | 2012-07-04 | 海洋王照明科技股份有限公司 | Fresnel lens and lamp with same |
-
2012
- 2012-12-05 CN CN201210513965.1A patent/CN103851374A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5365418A (en) * | 1990-05-11 | 1994-11-15 | Commonwealth Scientific And Industrial Research Organisation | Traffic light |
| CN1576898A (en) * | 2003-07-29 | 2005-02-09 | 株式会社西铁城电子 | Fresnel lens and an illuminating device provided with the fresnel lens |
| CN101539266A (en) * | 2008-03-19 | 2009-09-23 | 富准精密工业(深圳)有限公司 | Luminous element and lens thereof |
| CN101338874A (en) * | 2008-08-07 | 2009-01-07 | 上海亚明灯泡厂有限公司 | Illuminating device and its lens used therein |
| CN101994986A (en) * | 2009-08-21 | 2011-03-30 | 马士科技有限公司 | Fresnel lens sheet and luminaire using the same |
| CN201531823U (en) * | 2009-11-23 | 2010-07-21 | 李乐 | Light diffuser used for high-power LED light source |
| CN102537832A (en) * | 2010-12-29 | 2012-07-04 | 海洋王照明科技股份有限公司 | Fresnel lens and lamp with same |
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Application publication date: 20140611 |
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| WD01 | Invention patent application deemed withdrawn after publication |